Tobacco-pipe ventilator



March 27; 1 928. 1,664,146

J. WILSON TOBACCO PIPE VENTILATOR Filed June 14. 1926 John 75556072 Patented Mar. 27, 1928 JOHN WILSON, OE PAWTUCKET, RHODE ISLAND.

TOBACCO-PIPE VENTILATOR.

Application filed June 14, 1926. Serial No; 115,875.

This invention relates to certain new and useful improvements in tobacco pipe venti-V lators and has for its primary object to provide a valved ventilating attachment for the stem of a tobacco pipe to permit theentrance of a draught of cold fresh air into the stem of the pipe during the act of drawing smoke from the pipe bowl through the stem and mouthpiece.

A further object of the invention is to provide a tobacco pipe ventilator of the above type wherein the amount of cold air drawn into the stem is controlled by a valve device forming a part of the ventilator so as not to interfere with the smoke draught to the bowl and stem of the pipe.

With the above and other objects in View which will become apparent as the nature of the invention is better understood, the same consists in the novel form, combination and arrangement of parts hereinafter more fully described, shown in the accompanying drawing and claimed. I

In the accompanying drawing, wherein like reference characters are employed to indicate corresponding parts throughout the same,

Figure 1 is a side elevational view of a tobacco pipe equipped with the ventilator that depends from the lower side of the pipe stem, v

Figure 2 is a vertical cross sectional view taken on line 22 of Figure 1, showing the ventilator attachment anchored to the pipe stem by prongs or pins and the bowl valve for closing valve openings at the lower and upper ends of the ventilator,

Figure 3 is a fragmentary longitudinal sectionalview of a pipe stein showing the ventilator attachment screwed therein with the inner end of the attachment slightly projecting into the stem bore to prevent the passage of saliva in the pipe stem into the ventilator,

Figure 4 is a side elevational view of a pipe showing another form of mounting for the ventilator, and

Figure 5 is a cross sectional vie-w taken on line 55 of Figure 4. t

The ventilator attachment is associated with a tobacco pipe. comprising a bowl 1, stem 2 and mouth piece 3, the stem having the usual bore formed therein communicating with the pipe bowl and mouth piece 3.

As shown in Figs. 1 and 2,,the ventilator attachment comprises a tubular section 5 set into a transverse opening 6 formed in the 7 lower side of the pipe stem 2 with the inner tapered end 7 of the tubular section 5 extending into the bore 4 slightly beyond the side wall of the bore to prevent the flow of saliva from the bore 4 into the tubular section 5. An externally threaded band 8 incloses' the outer end of the tubular section 5 andcarries prongs 9 forcibly driven into the pipe stem for anchoring the ventilator in position.- The cap- 10 carries an internally threaded annular flange 11 that engages and encloses the band 8 with the outer end of the tubular section 5 engaged by the cap to retain the same in position. A valve opening 12 is formed in the cap 10 constituting a valve seat at the outer end of the ventilator while the inner tapered end 7 of the tubular section 5 constitutes a valve seat at the inner end thereof. A ball valve 13 is suitably mountedin the tubular section 5 and cooperates with the valve openings at each end of the ventilator.

During use-of the pipe draught created in the pipe bowl 1 and stem 2 to cause smoke'to flow through the pipe stem and and mouth piece will also cause a. draught through the ventilator and during such action, the ball valve 13' will be elevated from the seat 12 and moved upwardly to engage and close the valve seat at the innertapered end 7 of thetubular section "5. However, before the bowl valve is sufficiently moved upwardly to close the inner valve seat,.a sufiicient amount of cold air has been drawn into the pipe stein through the ventilator attachment to cool the smoke and render the use of the pipe more enjoyable' It will also be observed thatthe collection of saliva in the pipe stem and bowl will be prevented from passing into the ventilator attachment by reason of the inner tapered end o'f'the tubular section 5 projecting slightly beyond the side wall of the pipe bore 1, When itis desired to blow through the pipe at the bowl end 1 thereof for purposes of cleaning the same or the like, there will be no interference with the draught as the ball Valve 13 will be immediately moved downwardly to close upon the valve seat 12.

Another form of the invention is shown in Fig. 3 wherein the ventilator comprises'a tubular section 14 having areduced eXternally threaded end 15 entering a. side opening in the pipe stem 2 wit-h the inner end of the bore 16 in the reduced end 15 constituting a valve seat. The outer end of the tubular section 14 is externally threaded and receives the screw cap 17 having a central opening therein forming a va lve seat 18 while the ball valve 1*3 co-operates with the valve seats 16 and 18 as described in connection with the showing in Figure 2.

Still another way of; mounting the ventiator attachment upon the pipe stem is shown in Figs. 4t and 5' wherein the ring band 19 incloses the pipe stem, carries an externally threaded band or collar 8 that is engaged by the cap 10* which carries the internally threaded annular flange 11; The inner tapered end 7 of the tubular section 5 forms a valve seat at the inner end 0]": said tubular section while the opening 12 in the cap 10 forms a valve seat at the outerend ot the attachment. The operation of this form of the ventilator is the same as described in connection with Figs. 2 and 3. In each form of the invention, the screw cap at the outer end o ffthe ventilator attachment is readily removable for cleaning purposes or the like so that the attachment may be maintained in a perfectly sanitary condition,

While there is herein shown and described the preferred embodiment of the present invention, it is, nevertheless, to be understood that minor changes may be made therein without departing from the spirit and scope of the invention as claimed.

Having thus described my invention, I claim l 1. In a ventilator attachment for tobacco pipes, the combination with a'pipe stem having an opening in the side thereof, ofa ventilator comprising a tubular member mounted in the opening with one end extending outwardly of the stem, means for retaining the tubular member in the st'emincluding a band on the tubular member outwardly of the stem, prongs on the band extending into the body of the stem for retaining the same in position on the tubular member, a cap threaded on the band, a valve seat at the in ne'r end of thetubul'ar member and a valve seat on the cap, and a valve in the'tubula'r member e'ngageable with the two valve seats.

2. The combination with the stem of a smoking pipe or the like provided with "a smoke passage and a transverse air inlet opening communicating withsaid passage and having a pair of opposed valve seats, of a valve normally engaging one of said seats for closing said air inlet opening, said valve beiiig adapted to be drawn ofi of said one seat and into an engagement with the passage to admita limited amount of air into the latter durlng the smoking opera- 'tion, said valve being adapted to completely close the air inlet opening when engaged with either of said seats.

3. The combination with the stem of a smoking pipe or the like provided with a smoke passage and a transversev opening communicating with'said passage, of a ventilator comprising a tubular member mounted in said transverse opening of the stem and having a valve seat at the inner end other seat by suction produced in the smoke thereof, a removable cap on the outer end in the transverse opening with on'e endektending outwardly of the stem, means for retaining the tubular member in the transverse opening of the stem including a band on the outer end the tubular member, means on the band engaging the stem "for retaining said band on the tubular member, a cap for the o'uterend ofjthe 't-ubiilar'meinber i'einovably applied "to the "band andfhaving an air inlet opening, a valve seat at the inner end of the tubular member, "a valve seat on the cap about said air inlet "opening of the latter, and a valve in "the tubular member normally engaged with "the second named valve seat and movable by sii'cjtion in the smoke passage to engage tlre other valve seat.

'In testimony whereof I fa-iiix inysi gnatiire.

JOHN WVILSON'. 

